Properties of molten carboxylates. Part 1.—Electrical conductance and molar volumes of some molten lead and zinc carboxylates

1975 ◽  
Vol 71 (0) ◽  
pp. 1432 ◽  
Author(s):  
M. E. Ekwunife ◽  
M. U. Nwachukwu ◽  
F. P. Rinehart ◽  
S. J. Sime
Keyword(s):  
Electrical Conductance ◽  
Molar Volumes ◽  
Lead And Zinc ◽  
Molten Lead

Volumetrie Anomalies in the Molten Salt Systems KI-TlI and TlCl-TlBr

1974 ◽  
Vol 29 (12) ◽  
pp. 1846-1848 ◽  
Author(s):  
E. R. Buckle ◽  
P. E. Tsaoussoglou
Keyword(s):  
Ligand Binding ◽  
Molten Salt ◽  
Low Temperatures ◽  
Excess Volume ◽  
Electrical Conductance ◽  
Molar Volumes ◽  
Salt Systems

The densities of molten KI and TlI measured pyknometrically at various temperatures are slightly higher (0.1-0.2%) than the Archimedian values previously found by other workers. Molar volumes in the molten systems KI-TlI and TlCl-TlBr have also been measured pyknometrically. In the first system the relative excess volume is negative and in the second positive but as usual the melts expand on heating. The maximum deviations are about 2.5% and 1.5% respectively. In KI-TlI the excess volume-composition isotherm shows a double minimum at low temperatures, resembling the shape of the electrical conductance isotherms. The attribution of volumetric contractions to the relaxation of the thallium-ligand binding is supported by these results and by nmr evidence.

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